Council Approval Requirements Quick Answer Australia
Most minor renovations don't require council approval, but any structural changes, additions over 10sqm, or external alterations typically need either a Development Application (DA) or Complying Development Certificate (CDC) . Exempt Development covers internal-only cosmetic work. Choosing the right pathway saves weeks of delay and thousands in fees - and avoids $5,000-$800,000 penalties for working without approval.
Typical cost
Most minor renovations don't require council approval, but any structural changes, additions over 10sqm, or external alterations typically need either a Development Application (DA) or Complying Development Certificate (CDC) . Exempt Development covers internal-only cosmetic work. Choosing the right pathway saves weeks of delay and thousands in fees - and avoids $5,000-$800,000 penalties for working without approval.
Best next step
Use the guide below to compare options, avoid common traps and request itemised quotes from licensed local suppliers.
Quote check
Make sure each quote includes materials, labour, access requirements, exclusions, warranty and expected timeline.
Local factors
Final pricing can shift with site access, location, compliance requirements and the condition of existing infrastructure.
Development Approval Types: DA vs CDC vs Exempt Development Australia
Exempt Development
No approval required • Can start immediately • Most internal renovations
Commonly Exempt Renovations
- • Internal painting and decorating
- • Kitchen renovation (no structural changes)
- • Bathroom renovation (existing layout)
- • Flooring replacement (carpet, timber, tiles)
- • Window/door replacement (like-for-like)
- • Air conditioning installation (wall-mounted)
- • Repairs and maintenance
Important Conditions
- ! Building Code compliance: All work must meet Building Code standards
- ! Licensed trades required: Plumbers, electricians must be licensed
- ! Waterproofing certification: Required for all bathroom renovations
- ! No structural changes: Cannot remove/alter load-bearing walls
- ! Heritage restrictions: Exempt rules don't apply to heritage properties
Complying Development Certificate (CDC)
Fast-track approval • 2-4 weeks • Private certifier • Meets pre-set standards
Common CDC Renovations
- • Carport (under 40sqm, single storey)
- • Garage (under 50sqm, meets setbacks)
- • Deck/patio (10-25sqm, under 1m high)
- • Internal alterations (removing walls)
- • Single storey extension (under 40sqm)
- • Swimming pool (meets all standards)
- • Granny flat (under 60sqm in NSW)
CDC Requirements & Costs
- $ Application cost: $1,500-$3,500 (private certifier fees)
- ⏱ Timeline: 2-4 weeks for approval
- Plans required: Site plan, floor plans, elevations by draftsperson
- ✓ Must meet standards: All setback, height, area requirements
- Inspections: Mandatory inspections during construction
Development Application (DA)
Full council assessment • 8-16 weeks • Neighbour notification • Major works
DA Required For
- • Second storey addition
- • Large extensions (over 40-50sqm)
- • Front fence over 1.2m high
- • Heritage property alterations
- • Work exceeding complying limits
- • Significant external changes
- • Change of use (e.g., home business)
DA Process & Costs
- $ Application cost: $2,000-$8,000+ (council fees + consultants)
- ⏱ Timeline: 8-16 weeks (can extend to 6+ months)
- Plans required: Architectural plans, BASIX, surveys, reports
- Notification: Neighbours notified, can submit objections
- Risk: Can be rejected, requires modifications, appeals possible
When You Need Council Approval: Kitchen, Bathroom, Deck, Extension Requirements 2026 Australia
Kitchen Renovation (Internal Only)
✓ NO APPROVAL What's allowed: New cabinets, benchtops, appliances, flooring, lighting, plumbing fixtures. No structural changes or external alterations.
Requirements: Licensed plumber for gas/water, licensed electrician for power points/appliances.
Bathroom Renovation (Existing Layout)
✓ NO APPROVAL What's allowed: New tiles, vanity, toilet, shower, bath, fixtures. Keeping plumbing in same general location.
Requirements: Licensed waterproofer with certification, licensed plumber and electrician. Complying with AS 3740 waterproofing standards.
Small Deck or Patio (Under 10sqm, Under 1m High)
✓ EXEMPT (Most States) What's allowed: Small outdoor deck or patio at ground level, under 10sqm total area, under 1m above ground.
Varies by state: Check specific exemptions in QLD, VIC, WA. Must meet setback requirements (typically 900mm from boundary).
Carport or Garage
CDC REQUIRED When CDC applies: Under 40-50sqm, single storey, meets setbacks (900mm-1.5m from boundary), maximum 3.6-4.2m height.
Cost: $2,000-$3,500 for CDC. Timeline: 2-4 weeks. Must provide site plan, floor plan, elevations.
Single Storey Room Addition (Under 40sqm)
CDC TYPICALLY When CDC applies: Ground floor only, under 40sqm, meets setbacks, doesn't affect heritage, not on front facade.
Cost: $1,800-$3,500 for CDC. Timeline: 2-4 weeks. May require DA if visible from street or in heritage area.
Second Storey Addition
DA REQUIRED Why DA needed: Significant visual impact, overlooking concerns, structural engineering required, not eligible for CDC.
Cost: $4,000-$8,000+ for DA. Timeline: 10-16 weeks minimum. Requires architectural plans, BASIX, structural engineer reports.
Large Extension (Over 50sqm)
DA REQUIRED Why DA needed: Exceeds CDC size limits, requires full council assessment, neighbourhood notification.
Cost: $3,000-$6,000+ for DA. Timeline: 8-14 weeks. Include floor plans, elevations, site plan, BASIX certificate, shadow diagrams.
Heritage Property - Any External Work
DA REQUIRED Why DA needed: Heritage listings remove most exemptions. Even minor external changes require DA with heritage impact statement.
Cost: $4,000-$10,000+ for DA. Timeline: 12-20+ weeks. Requires heritage consultant report, conservation architect, detailed documentation.
Council Approval Costs & Processing Times by State 2026 Australia
New South Wales
CDC Costs
$1,500-$3,500 (private certifier)
Timeline: 2-4 weeks
DA Costs
$2,000-$6,000+ (depends on value)
Timeline: 8-16 weeks
Key Rules
Granny flats 60sqm CDC pathway
Decks under 10sqm exempt
Victoria
Building Permit
$1,200-$3,000 (private surveyor)
Timeline: 2-3 weeks
Planning Permit
$1,800-$5,000+ (council)
Timeline: 8-12 weeks
Key Rules
ResCode standards strict
Many renovations need planning
Queensland
Building Approval
$1,500-$3,200 (private certifier)
Timeline: 2-4 weeks
Development Permit
$2,500-$7,000+ (council)
Timeline: 10-15 weeks
Key Rules
Accepted development codes
Granny flats up to 60sqm
Western Australia
Building Permit
$1,000-$2,800 (private certifier)
Timeline: 2-4 weeks
Development Approval
$2,000-$5,000+ (council)
Timeline: 8-14 weeks
Key Rules
R-Codes determine requirements
Generous setback allowances
South Australia
Building Approval
$1,200-$2,500 (private certifier)
Timeline: 2-3 weeks
Planning Consent
$1,800-$4,500+ (council)
Timeline: 8-12 weeks
Key Rules
Development Plan codes
Many deemed-to-satisfy rules
Tasmania
Building Permit
$1,000-$2,200 (private certifier)
Timeline: 2-4 weeks
Planning Permit
$1,500-$4,000+ (council)
Timeline: 8-14 weeks
Key Rules
Scheme codes vary by council
Smaller exemption thresholds
How to Apply for Development Approval: Application Process Australia
Step 1: Confirm Approval Type Needed
- • Contact your local council planning department or check online tools
- • Provide property address and describe proposed renovation work
- • Ask specifically: "Is this exempt, complying, or require DA?"
- • Check for heritage overlays, flood zones, bushfire zones, or special restrictions
Step 2: Engage Professionals
- • For CDC: Hire draftsperson ($800-$1,500) or private certifier (includes drawings)
- • For DA: Engage architect ($3,000-$10,000) plus specialist consultants if needed
- • Get survey plan if required (shows boundaries, existing structures) - $800-$1,500
- • Structural engineer for extensions/second storeys ($1,500-$3,500)
Step 3: Prepare Required Documents
- • Site plan: Shows property boundaries, existing buildings, proposed work
- • Floor plans: Existing and proposed layouts with dimensions
- • Elevations: External views showing height, materials, finishes
- • BASIX certificate: Required for extensions over 50sqm in NSW (energy/water)
- • Additional for DA: Shadow diagrams, stormwater plan, landscape plan, statement of environmental effects
Step 4: Lodge Application & Pay Fees
- • CDC: Private certifier lodges and assesses (you pay certifier directly)
- • DA: Lodge via council online portal or in person with all documents
- • Pay council DA fees (calculated on estimated construction value)
- • Council may request additional information (respond within 14 days or delays occur)
Step 5: Approval Issued & Construction
- • CDC: Typically approved in 2-4 weeks, can start work immediately
- • DA: Approved in 8-16+ weeks, may have conditions to satisfy first
- • Construction Certificate (CC) required before starting work (separate to DA)
- • Mandatory inspections during construction (footings, frame, waterproofing, final)
- • Occupation Certificate (OC) issued at completion for habitable works
Fines & Penalties for Renovating Without Council Approval 2026 Australia
Serious Legal and Financial Consequences
Working without required approvals is illegal and detected eventually - through neighbour complaints, insurance claims, property sales, or council inspections. Penalties are severe and remediation costs often exceed the original approval costs.
Immediate Penalties
Fines by State
NSW: $5,000-$110,000
VIC: $16,000-$312,000
QLD: $40,000-$800,000
WA: $50,000-$200,000
Stop Work Orders
Council can immediately halt all work until approval obtained. Contractors must leave, materials exposed to weather.
Demolition Orders
Council can order unapproved work demolished at your expense. Common for non-complying additions, carports, decks.
Long-Term Consequences
Cannot Sell Property
Must disclose all unapproved work. Buyers will demand rectification or reduce offer significantly. Conveyancers often refuse to proceed.
Insurance Void
Home insurance claims rejected for damage related to unapproved structural work. Liability insurance void if injury occurs.
Rectification Costs
Retrospective DA costs 2-3x normal fees. May require demolition and rebuild. Often $20,000-$50,000+ total to fix.
Can I Get Retrospective Approval?
Sometimes, but it's expensive, stressful, and not guaranteed:
- • Costs 2-3x normal approval: Higher fees, consultant reports, possible modifications required
- • May be rejected: If non-compliant, council can demand demolition
- • Fines still apply: Retrospective approval doesn't void penalties for illegal work
- • Timeline: Can take 6-12+ months to resolve, property sale on hold during this time
